MITSUBISHI <CONTROL / DRIVER IC>
M56749FP
4 CHANNEL ACTUATOR MOTOR
DRIVER
DESCRIPTION
The M56749FP is a semiconductor integrated circuit designed for a
CD-ROM actuator driver.
This device can function 4 channel actuators by 1 chip due to
include 4 channel BTL drivers.
Also, this device include a mute circuit, a Vcc check circuit and
TSD function.
PIN CONFIGURATION (TOP VIEW)
Vrefm-out
Mute3ch-
Mute4ch-
Vctl1L
Vctl1H
1
2
3
4
5
6
7
36
35
34
33
32
31
30
Vref
Vrefm
SS . GND
Vctl4L
Vctl4H
VM4(-)
VM4(+)
FEATURES
qLower
saturation voltage.
(typical 1.35V at load current 500mA)
qWide
supply voltage range.
(4.5V to 13.2V)
qLower
cross-over distortion.
VM1(-)
VM1(+)
M56749FP
8
9
GND
10
11
VM2(+)
12
13
14
15
16
17
18
29
28
27
26
25
24
23
22
21
20
19
VM3(+)
VM3(-)
Vctl3(-)
Vctl3(+)
Vm2
Vbs2
-Por
GND
APPLICATION
CD-ROM
VM2(-)
Vctl2H
Vctl2L
Vm1
Vbs1
Vcc
Outline 36P2R-D
BLOCK DIAGRAM
Vm1 Vbs1
16
17
Vref
36
Vcc
18
- POR
-Por
19
Vrefm
35
Vrefm-out
1
Vbs2 Vm2
20
21
+
-
Vctl1L
Vctl1H
4
5
+
-
+
-
-
+
Vm2
+
-
+
-
-
+
33 Vctl4L
32 Vctl4H
VM1(+) 7
VM1(-)
6
CH1
Vm2
2
+
-
30 VM4(+)
31 VM4(-)
CH4
22 Vctl3(+)
Vctl2L 15
Vctl2H 14
VM2(+) 12
VM2(-) 13
+
-
+
-
-
+
Mute on : Low or open
+
-
23 Vctl3(-)
4ch
TSD
CH3
3ch
CH2
+
-
-
+
25 VM3(+)
24 VM3(-)
2
Mute3ch-
3
Mute4ch-
34
SS.GND
8
–
11 26
–
29
PGND (8PIN)
MITSUBISHI [ MITSUBISHI ELECTRIC SEMICONDUCTOR ]
